California – An attorney for Donald Sterling recently stated he expected that his client will challenge a clause in the family trust that allows his wife to be controlling owner of the Los Angeles Clippers. As reported by Reuters, the embattled NBA team owner is purportedly attempting to block the franchise from being sold in a tentative deal approved by league.

The clause gave Sterling’s estranged wife Shelly control of the Clippers after he was deemed incapable of handling business affairs by doctors. Sterling was diagnosed with Alzheimer’s disease last month.

The deal by Shelly Sterling involves the sale of the franchise to Steve Ballmer, the former chief executive of Microsoft Corp, for $2 billion. Although tentatively approved by the league, a vote must still be held by owners.

Donald Sterling has filed a lawsuit against the NBA and Adam Silver, commissioner of the league, accusing them of ousting him illegally.